123 dEcode® Addition and Subtraction for numbers 15 to 19
123 dEcode® Mathematics program workbook:
- The fourth book in a series of 5 addition and subtraction workbooks.
- Helps anyone learn to add and subtract.
- Focuses on the number families of 15 to 19 to help learner's numerical
working memory.
Order the 123 dEcode® Addition and Subtraction
15-19 Workbook
Order the complete Addition and Subtraction Workbook
Set
Return to 123 dEcode®
Computational Skills Development Product Catalogue
Return to the 123 dEcode®
for Math Product Catalogue
